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CVE-2026-1858

wget2 Improper Certificate Validation

wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Gnu
Products
Wget2
CVE-2025-69195

Wget2: gnu wget2: memory corruption and crash via filename sanitization logic with attacker-controlled urls

A flaw was found in GNU Wget2. This vulnerability, a stack-based buffer overflow, occurs in the filename sanitization logic when processing attacker-controlled URL paths, particularly when filename restriction options are active. A remote attacker can exploit this by providing a specially crafted URL, which, upon user interaction with wget2, can lead to memory corruption. This can cause the application to crash and potentially allow for further malicious activities.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
Gnu
Products
Wget Wget2
CVE-2025-69194

Wget2: arbitrary file write via metalink path traversal in gnu wget2

A security issue was discovered in GNU Wget2 when handling Metalink documents. The application fails to properly validate file paths provided in Metalink <file name> elements. An attacker can abuse this behavior to write files to unintended locations on the system. This can lead to data loss or potentially allow further compromise of the user’s environment.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Gnu
Products
Wget Wget2